膜科学与技术

Fe0/H2O2对正渗透处理印染废水的性能影响及机理研究

作者：邬倩倩，黄满红，宋佳玲，郑盛阳

单位：东华大学环境科学与工程学院，上海201620

关键词： Fe0/H2O2体系；印染废水；正渗透；膜污染；

出版年,卷(期):页码： 2021,41(5):105-113

摘要：

采用Fe0/H2O2体系作为正渗透(FO)处理某印染废水处理厂二沉池出水的预处理技术，通过分析在不同反应时间下，Fe0投加浓度、H2O2投加浓度、pH三个因素对COD和UV254去除率的影响，确定预处理的最佳实验条件，探究预处理对FO的性能及膜污染的影响，并利用SEM、接触角、EEM、XPS等表征手段分析其影响FO性能的机理。结果表明在预处理的最佳实验条件下，即Fe0和H2O2投加浓度分别为1.5 g/L和10 mM，pH=2~3，反应60 min时，可大大减缓FO膜比通量的下降速率，FO膜对污染物的截留率提升了10 %以上。对反应前后Fe0的XPS表征验证了Fe0 和H2O2反应过程中产生了能有效去除有机物的羟基自由基和铁（氢）氧化物，对废水处理前后的EEM光谱表征发现Fe0/H2O2体系产生的对废水中蛋白质样和SMP物质有明显降解作用，通过膜表面SEM和接触角测定表明Fe0/H2O2预处理可显著减轻FO膜结垢的问题。

Fe0/H2O2 system is used as the forward osmosis (FO) pretreatment technology for treating effluent from the secondary sedimentation tank of a printing and dyeing wastewater treatment plant. Through analyzing the effects of Fe0 dosage, H2O2 dosage and pH on the removal rate of COD and UV254 under different reaction time, the optimal experimental conditions for pretreatment are determined. The effects of pretreatment on the properties of FO and membrane fouling were investigated, and the mechanism of the effects was analyzed by SEM, contact Angle, EEM, XPS and other characterization methods. The results show that under the optimal pretreatment conditions, namely 1.5 g/L and 10 mM Fe0 and H2O2 dosage, pH=2~3 and reaction time of 60 min, the decrease rate of specific flux of FO membrane can be greatly slowed down, and the rejection rate of FO membrane to pollutants is increased by more than 10%. The XPS characterization of Fe0 before and after the reaction verified that hydroxyl radicals and iron (hydrogen) oxides, which can effectively remove organic matter, were produced in the reaction process of Fe0 and H2O2. The EEM before and after the wastewater treatment showed that the Fe0/H2O2 system produced significant degradation of protein samples and SMP substances in the wastewater. The SEM and contact Angle measurements on the membrane surface show that Fe0/H2O2 pretreatment can significantly reduce the FO membrane fouling.

第一作者简介：邬倩倩（1997— ），女，湖北孝感人，硕士研究生，研究方向：正渗透的组合工艺及其应用。E-mail：qianqianwu18@163.com。

参考文献：

[1] 王开花. 印染废水处理技术现状及发展趋势 [J]. 资源节约与环保, 2020, 12): 79-80.
[2] 罗瑛, 刘辉, 龙慧君, et al. 印染废水预处理技术研究进展(续一) [J]. 印染助剂, 2020, 37(11): 5-8.
[3] 刘燕,张铭元,王军,李洪,邓会宁.正渗透技术浓缩氯碱阳极淡盐水[J].膜科学与技术,2019,39(04):96-103.
[4] 吴科霖,骆华勇,方茜,荣宏伟.电场敏感水凝胶的制备及其正渗透脱盐性能研究[J].膜科学与技术,2020,40(06):58-64.
[5] SUWAILEH W, PATHAK N, SHON H, et al. Forward osmosis membranes and processes: A comprehensive review of research trends and future outlook [J]. Desalination, 2020, 485(11): 44-55.
[6] YADAV S, SALEEM H, IBRAR I, et al. Recent developments in forward osmosis membranes using carbon-based nanomaterials [J]. Desalination, 2020, 482(114): 63-75.
[7] 周宗尧,胡云霞,刘中云,Edo Bar-Zeev.海水淡化膜集成系统的发展现状及优势分析[J].膜科学与技术,2017,37(06):129-135.
[8] LY Q V, NGHIEM L D, CHO J, et al. Insights into the roles of recently developed coagulants as pretreatment to remove effluent organic matter for membrane fouling mitigation [J]. Journal of Membrane Science, 2018, 564(643-52.
[9] 张燕, 杨瑞雪. 芬顿氧化在印染废水深度处理中的应用实验研究 [J]. 广州化工, 2019, 47(17): 94-106.
[10] PAN Y, ZHOU M, CAI J, et al. Significant enhancement in treatment of salty wastewater by pre-magnetization Fe0/H2O2 process [J]. Chemical Engineering Journal, 2018, 339(4): 11-23.
[11]吴敏杰,黄满红,陈刚,蔡腾,宋佳玲.正渗透膜对印染废水中铬的处理特性[J].膜科学与技术,2019,39(04):124-131.
[12] LI J, JI Q, LAI B, et al. Degradation of p-nitrophenol by Fe0/H2O2/persulfate system: Optimization, performance and mechanisms [J]. Journal of the Taiwan Institute of Chemical Engineers, 2017, 80(6): 86-94.
[13] DONADELLI J A, CARLOS L, ARQUES A, et al. Kinetic and mechanistic analysis of azo dyes decolorization by ZVI-assisted Fenton systems: pH-dependent shift in the contributions of reductive and oxidative transformation pathways [J]. Applied Catalysis B: Environmental, 2018, 231(117): 51-61.
[14] QASIM M, DARWISH N A, SARP S, et al. Water desalination by forward (direct) osmosis phenomenon: A comprehensive review [J]. Desalination, 2015, 374(4): 57-69.
[15] CHEN W, WESTERHOFF P, LEENHEER J A, et al. Fluorescence Excitation-Emission Matrix Regional Integration to Quantify Spectra for Dissolved Organic Matter [J]. Environmental Science and Technology, 2003, 37(24): 01-10.
[16] YAMASHITA Y, TANOUE E. Chemical characterization of protein-like fluorophores in DOM in relation to aromatic amino acids [J]. Marine Chemistry, 2003, 82(3-4): 55-71.
[17] CHO Y, CHOI W. Visible light-induced reactions of humic acids on TiO2 [J]. Journal of Photochemistry and Photobiology A: Chemistry, 2002, 148(1-3): 29-35.
[18] ZHANG H, WANG J, ZHANG X, et al. Enhanced removal of lomefloxacin based on peroxymonosulfate activation by Co3O4/δ-FeOOH composite [J]. Chemical Engineering Journal, 2019, 369(8): 34-44.
[19] LEE G-H, SEON KIM Y, KIM D-W. Redox effect of Fe2+/Fe3+ in iron phosphates for enhanced electrocatalytic activity in Li-O2 batteries [J]. Chemical Engineering Journal, 2020, 388(124): 82-94.
[20] HUANG T, ZHANG G, ZHANG N, et al. Fe0-H2O2 for advanced treatment of citric acid wastewater: Detailed study of catalyst after several times use [J]. Chemical Engineering Journal, 2018, 336(2): 33-40.
[21] WANG F, LUO Y, RAN G, et al. Sequential coagulation and Fe0-O3/H2O2 process for removing recalcitrant organics from semi-aerobic aged refuse biofilter leachate: Treatment efficiency and degradation mechanism [J]. Science of The Total Environment, 2020, 699(134): 63-71.
[22] SHEN L, CUI X, YU G, et al. Thermodynamic assessment of adsorptive fouling with the membranes modified via layer-by-layer self-assembly technique [J]. Journal of Colloid and Interface Science, 2017, 494(56): 194-203.
[23] YAN H, NIAN Y, ZHOU Y, et al. A detailed dissolved organic matter characterization of starch processing wastewater treated by a sedimentation and biological hybrid system [J]. Microchemical Journal, 2017, 130(29): 285-300.

服务与反馈：

【文章下载】【加入收藏】

《膜科学与技术》编辑部地址：北京市朝阳区北三环东路19号蓝星大厦邮政编码：100029 电话：010-64426130/64433466 传真：010-80485372邮箱：mkxyjs@163.com